If you want to travel on your own, you can say "I want to go on a solo trip" or "I want to travel by myself." You can also say "I want to take a solo trip" or "I want to go on a self-guided trip." These phrases all convey the idea that you want to travel independently, without the company of others.

It's also important to consider the safety and logistical aspects of solo travel. You may want to consider researching the destination you plan to visit and making a plan for how you will navigate transportation, accommodation, and other necessities while you are there. It can also be helpful to let someone you trust know your itinerary and check in with them regularly during your trip.